it looks as though the hand stitches (each one a back stitch, 8 to the inch) just aren't strong enough to hold the binding in place over time. I don't know whether the problem is real or just perceived because the binding and thread are much lighter in color than I've used before and therefore I may perceive them as being more fragile.
The binding fabric seems sturdier than most (if my wrists hold out until it is done I'll be grateful), the thread is the same as I've been using for years so I'm not sure why I'm questioning the durability of the binding other than it just looks fragile.
Should I use a double thread to attach the binding and single thread to sew it in place on the back or do you think a single thread with the back stitch will be sturdy enough? I truly appreciate your opinions.